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22-01-2021
Mathematics

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sqdancefan sqdancefan

22-01-2021

9514 1404 393

Answer:

x³ +9x² +27x +27

Step-by-step explanation:

Put x where 'a' is, and put 3 where 'b' is in the given pattern, then simplify.

(x +3)³ = x³ +3x²(3) +3x(3²) +3³

= x³ +9x² +27x +27

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